| 连铸管坯裂纹在加热穿孔过程中的变化 |
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| 引用本文： | 张才安,刘志怀,马华宣,刘仁明.连铸管坯裂纹在加热穿孔过程中的变化[J].钢管,1994(6). |
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| 作者姓名： | 张才安 刘志怀 马华宣 刘仁明 |
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| 作者单位： | 重庆大学，成都无缝钢管厂金堂分厂 |
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| 摘 要： | 研究了连铸管坯表面不同深度裂纹在加热穿孔过程中的变化。结果表明，在连铸管坯内部质量良好时，剥皮能显著改善穿孔毛管表面质量；加热穿孔可以消除或减少管坯表面的微裂纹；管坯表面较深的裂纹穿孔后将在毛管表面以外折的形式出现。
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| 关 键 词： | 连铸管坯表面裂纹，加热，穿孔，裂纹变化 |
DEVELOPMENT OF CC BLOOM SURFACE CRACKS DURING HEATING/PIERCING |
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| Zhang Caian.DEVELOPMENT OF CC BLOOM SURFACE CRACKS DURING HEATING/PIERCING[J].Steel Pipe,1994(6). |
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| Authors: | Zhang Caian |
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| Abstract: | study concerning the development of CC bloom surface cracks with different depths during the course of heating/piercing shows that in case of CC blooms with satisfactory internal quality, peeling process contributes to considerable improvement on the surface quality of the shell, while heating/piercing process removes off or reduce the slight flaws on the work piece, and that deeper cracks on the bloom surface develops into outer surface folds of the shell after piercing. |
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| Keywords: | Surface crack of CC bloom for pipe making Heating Piercing Crack development |
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